Description

Serendipity before 2.6.1 contains an authentication context confusion vulnerability where password validation and session loading operate independently without ensuring both use the same user record. An authenticated Editor can create a username collision with an Administrator account and obtain administrative privileges by logging in with their own password while the session loads the Administrator's account data.

Severity (CVSS)

Base score8.7
SeverityHigh
VersionCVSS 4.0
VectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Provided byCNA

Weaknesses

  • CWE-304 — Missing Critical Step in Authentication

Affected products

VendorProductVersions
s9ySerendipity0 to <2.6.1; 2.6.1

References

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 31 Jul 2026 07:05 UTC.